Company lists · Data refreshed September 2026

Top 25 Environmental engineering firms based in Chicago, United States

Name: Environmental engineering firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 48 companies tracked

RevenueBase identified 48 environmental engineering firms headquartered in Chicago, United States as of September 2026 and tracks 2,305 professional contacts across them, including 1,166 with verified work emails. Houston is the largest hub.

This list covers environmental engineering firms headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

48Companies

2,305Contacts tracked

1,166Verified emails

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The 25 largest environmental engineering firms based in Chicago, United States

Ranked by team size

Top 25 of 48 environmental engineering firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to environmental engineering firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	HBK Engineering, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	501-1,000	674 contacts →
	Strong evidence “HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Source: RevenueBase Database · checked Sep 16, 2026
2	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	201-500	432 contacts →
	Indirect evidence “In 1979, Collins Engineers, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
3	Infrastructure Engineering INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	201-500	224 contacts →
	Partial evidence “Infrastructure Engineering Inc.(IEI) is a majority African American-owned, multi-disciplinary consulting firm with offices in eight states that delivers design engineering…” Source: RevenueBase Database · checked Sep 16, 2026
4	ESD NOW Stantec Consulting Services	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	201-500	208 contacts →
	Partial evidence “A global company, ESD is a leader in Improving Society Through the Built Environment.” Source: RevenueBase Database · checked Sep 16, 2026
5	Singh Associates, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	51-200	110 contacts →
	Partial evidence “For more than 30 years, SINGH + Associates has been meeting and exceeding our clients’ expectations for high quality planning, design and engineering services delivered with care…” Source: RevenueBase Database · checked Sep 16, 2026
6	Environmental Design International INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	51-200	68 contacts →
	Partial evidence “Clients can trust Environmental Design International inc.(EDI) to be responsive, demonstrate technical excellence, adhere to the demands of budgets and schedules, and offer…” Source: RevenueBase Database · checked Sep 16, 2026
7	Ciorba Group, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	51-200	66 contacts →
	Partial evidence “Ciorba Group has been providing professional engineering services to various state and local governmental agencies for over 95 years.” Source: RevenueBase Database · checked Sep 16, 2026
8	Carnow, Conibear & Assoc., LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	52 contacts →
	Indirect evidence “Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Source: RevenueBase Database · checked Sep 16, 2026
9	Greenprint Partners	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	41 contacts →
	Partial evidence “Greenprint Partners is an award-winning consulting firm specializing in community-centered environmental infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
10	Specialty Consulting, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	51-200	37 contacts →
	Partial evidence “Specialty Consulting, Inc.(SPC) is a Hispanic–owned, infrastructure engineering and scientific consulting firm based in Chicago.” Source: RevenueBase Database · checked Sep 16, 2026
11	Mcguire Engineers	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	35 contacts →
	Partial evidence “Founded in 1986 in Chicago, McGuire Engineers, Inc.(MEPC) has been providing engineering services to clients worldwide for over 30 years.” Source: RevenueBase Database · checked Sep 16, 2026
12	SRS Sustainment And Restoration Services	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	34 contacts →
	Partial evidence “SRS provides engineering, science, and construction services to deliver sustainable facility design and construction including the restoration of previously used sites for…” Source: RevenueBase Database · checked Sep 16, 2026
13	Antero Group	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	30 contacts →
	Strong evidence “Civil Engineering \| Urban & Rural Planning \| Economic Development \| Grant Services \| Branding & Marketing \| Environmental Antero Group is an interdisciplinary firm that integrates…” Source: RevenueBase Database · checked Sep 16, 2026
14	Gabriel Environmental Services	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	28 contacts →
	Partial evidence “Gabriel Environmental Services is a multi-disciplinary environmental consulting firm headquartered just northwest of downtown Chicago.” Source: RevenueBase Database · checked Sep 16, 2026
15	Orion Engineers, Pllc	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	23 contacts →
	Partial evidence “Orion Engineers, PLLC is a civil, structural & construction engineering consulting firm based in the Midwest delivering planning, design, and construction management services to…” Source: RevenueBase Database · checked Sep 16, 2026
16	Callan Consulting Engineers, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	20 contacts →
	Partial evidence “Our Team, Your Building - It’s a Perfect Fit At Callan Consulting Engineers, we provide professional engineering guidance from project inception to post-occupancy, including…” Source: RevenueBase Database · checked Sep 16, 2026
17	Carlson Environmental, A Nova Group, GBC Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “Carlson Environmental, a Nova Group, GBC Company, was originally founded in 1988 by Dr.” Source: RevenueBase Database · checked Sep 16, 2026
18	Nijman Franzetti, LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1-10	15 contacts →
	Partial evidence “We are a boutique environmental law firm representing corporate, municipal and individual clients regarding water, waste and air issues in areas of compliance counseling…” Source: RevenueBase Database · checked Sep 16, 2026
19	EPS Environmental Services, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “Since its incorporation in 1992, EPS Environmental has provided a broad range of environmental services, including thousands of property assessments, several thousand Phase II…” Source: RevenueBase Database · checked Sep 16, 2026
20	The Astor Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	7 contacts →
	Indirect evidence “The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Source: RevenueBase Database · checked Sep 16, 2026
21	Allegro Civil Engineers	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Partial evidence “A consulting civil engineering firm headquartered in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 16, 2026
22	Environmental Group Services Limited Egsl	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	11-50	4 contacts →
	Strong evidence “Environmental Group Services, Ltd.(EGSL) is a full service environmental engineering, training and consulting company located in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 16, 2026
23	JLR Designs	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
24	Bollman Engineering	Partial evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “Bollman Engineering is a civil engineering firm, that blends excellence and innovation in every project.” Source: RevenueBase Database · checked Sep 16, 2026
25	Cadenza Environmental LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Strong evidence “Environmental Engineering and Consulting Services” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: environmental engineering firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names environmental engineering firms.
Partial evidence: Its own public description names part of environmental engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental engineering firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 48 environmental engineering firms based in Chicago, United States

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Environmental engineering firms based in Chicago, United States at a glance

As of Sep 16, 2026

50.6%Verified-email coverage

48.0Average contacts per company

11-50Median size (employees)

287.5%Largest-city concentration · Houston

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 48 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among environmental engineering firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “environmental engineering firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names environmental engineering firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among environmental engineering firms, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,166 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Environmental engineering firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names environmental engineering firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many environmental engineering firms are there based in Chicago, United States?

RevenueBase identified 48 environmental engineering firms headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

HBK Engineering, LLC, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most environmental engineering firms?

Houston leads with 138 headquartered companies, followed by New York (101) and Austin (73).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,166 verified decision-maker contacts tracked across these 48 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.